64979441 has 4 divisors (see below), whose sum is σ = 67075584. Its totient is φ = 62883300.

The previous prime is 64979429. The next prime is 64979443. The reversal of 64979441 is 14497946.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64979441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64979392 and 64979401.

It is not an unprimeable number, because it can be changed into a prime (64979443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1048025 + ... + 1048086.

It is an arithmetic number, because the mean of its divisors is an integer number (16768896).

Almost surely, 2^64979441 is an apocalyptic number.

It is an amenable number.

64979441 is a deficient number, since it is larger than the sum of its proper divisors (2096143).

64979441 is a wasteful number, since it uses less digits than its factorization.

64979441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2096142.

The product of its digits is 217728, while the sum is 44.

The square root of 64979441 is about 8060.9826324090. The cubic root of 64979441 is about 402.0301805679.

The spelling of 64979441 in words is "sixty-four million, nine hundred seventy-nine thousand, four hundred forty-one".